Maybe he's lost in his thoughts or feeling a bit sad and needs some time alone to sort things out.
Perhaps the boy is waiting for someone or something and is patiently sitting alone. Or maybe he's simply enjoying the peace and quiet and observing the world around him.
Maybe he's going through a tough time and feeling lonely. That's often a common reason for such a scene.
Maybe the kid is in a bad mood and wants some time alone to think.
Maybe she's lost in her thoughts or just needs some quiet time to herself.
Maybe he's feeling down or had a rough day.
Maybe she's feeling sad or lost. Sometimes kids need some time alone to think.
Maybe the kid doesn't have friends to sit with or there was a fight with classmates earlier.
Maybe she's going through a tough time and feeling lonely. That could be why she's sitting alone.
Perhaps the cartoon is trying to depict a moment of solitude for the boy, which could be either peaceful or a bit sad depending on the context. Maybe he's daydreaming or just enjoying being by himself for a while.
Maybe he needed to use the toilet. It could be a normal part of his daily routine.
Maybe he's tired and needs a rest.